Seiko Cal. Y102A and Y112A Parts List
Comprehensive parts list for Seiko caliber Y102A and Y112A quartz movements. This reference catalogs all mechanical and electromechanical components necessary for repair and restoration—train wheel bridge, center wheel, pinions, minute wheel, hour wheel, setting wheel, clutch wheel, winding stem, setting lever, yoke, date dial components, driving wheel, dial guard, circuit block, coil block, step rotor, rotor stator, battery connections, screws, and setting lever pin. The documentation covers two distinct dial variations that accommodate crown and calendar frame positioning at both 3 o'clock and 6 o'clock locations, with black numerals on white background options. Essential for watchmakers, service technicians, and movement specialists who require precise component identification and assembly guidance during disassembly, maintenance, or parts procurement.
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